table.copy()

Type Function
Library table.*
Return value Array
Revision Current Public Release (2017.3068)
Keywords table, array
See also table.concat()

Overview

Returns a shallow copy of array, i.e. the portion of the array (table) with integer keys. A variable number of additional arrays can be passed in as optional arguments. If an array has a hole (a nil entry), copying in a given source array stops at the last consecutive item prior to the hole.

In Lua, the function table.concat() is equivalent to JavaScript's array.join(). Hence, the following function is called copy().

Syntax

table.copy( t )

table.copy( t, ... )
t (required)

Array. An array of elements.

Additional arrays can optionally be passed.

Example

local t1 = {1,3,5,7,9}
local t2 = {2,4,6,333}
t2[6] = 555 -- create hole
local t3 = {11,13,17,19}
 
local c = table.copy( t1, t2, t3 )

-- output: 1, 3, 5, 7, 9, 2, 4, 6, 333, 11, 13, 17, 19
print( table.concat( c, ", " ) )